Legal remedy for 3 bedroom home purchase that has a septic permit for only 2 bedrooms located in Chatham county, NC

Your legal options would depend on a number of facts that are unknown. First, did the seller complete and deliver the required NC Residential Property Disclosure Report and if so, what did it say? Second, were you or the seller represented by a real estate agent and if so, what did they know and report on the listing? Too many unanswered questions at this point.

I agree that there are no enough facts to fully answer your question. What does the seller's disclosure state? Was the home marketed as a two BR or three BR home? You should check your state's consumer protection laws as they may afford a cause of action for a negligent misrepresentation.